容积式液压泵能正常作业的基本条件是：①在构造上能构成密封的作业容积；②密封作业容积能完结周期性的改变，密封作业容积由小变大时与吸油腔相通，由大变小时与排油腔相通；③吸油腔与排油腔必须彼此离隔。2．液压泵的类型按液压泵输出的流量能否调节，可分为定量液压泵和变量液压泵；按其构造方式不一样可分为齿轮泵、叶片泵、柱塞泵和螺杆泵等。德国博世REXROTH力士乐齿轮泵:质量保证，货期稳定订货号/型号如下：0510425009AZPF-10-008RCB20MB0510525009AZPF-10-011RCB20MB0510525324AZPF-12-011LRR20MB0510625013AZPF-10-019RCB20MB0510425009AZPF-10-008RCB20MBR918PT0550AZPS-22-022RPR20MBR918C03771AZPS-11-008RCB20MBR918C02883AZPGF-11-038/004RCB2020MBR918C02771AZPGG-12-028/028LDC2020MBR918C02740AZPNF-11-032/014LDC0720KB-S0023R918C02614AZPNF-11-022/008RDC720KB-S0023R918C02598AZPNN-11-025/022RDC77KB-S0023R918C02594AZPNF-11-032/016RDC720KB-S0023R918C02591AZPNF-11-032/008RDC720KB-S0023R918C02478AZPF-10-022RSG20PB-S0012R918C02445AZPG-11-038LDC7KB-S0023R918C02440AZPN-11-025LDC7KB-S0023R918C02383AZPF-22-022LRR20MBR918C02381AZPF-21-022LFB20MBR918C02310AZPF-22-022RHO30KBR918C02301AZPG-11-038RDC7KB-S0023)